Air pump



FIG. 1 is a left side elevational view of an air pump, with a retractable tubular extension in a retracted state, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front, top and right side perspective view of the air pump with the tube and cylinder extended, the size of such view being shown reduced;

FIG. 7 is a left side elevational view thereof;

FIG. 8 is a front elevational view thereof; and,

FIG. 9 is a right side elevational view thereof.

The undisclosed sides of FIGS. 2 and 8 are the same in appearance as the sides shown. 

The ornamental design for an air pump, as shown and described. 